1 /*****************************************************************************
2 * input.c: input thread
3 * Read an MPEG2 stream, demultiplex and parse it before sending it to
5 *****************************************************************************
6 * Copyright (C) 1998, 1999, 2000 VideoLAN
7 * $Id: input.c,v 1.99 2001/04/22 00:08:26 stef Exp $
9 * Authors: Christophe Massiot <massiot@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
32 #include <sys/types.h>
39 /* Network functions */
41 #if !defined( SYS_BEOS ) && !defined( SYS_NTO )
42 #include <netdb.h> /* hostent ... */
43 #include <sys/socket.h>
44 #include <netinet/in.h>
45 #include <arpa/inet.h>
46 #include <sys/types.h>
47 #include <sys/socket.h>
51 # include <sys/times.h>
62 #include "intf_playlist.h"
64 #include "stream_control.h"
65 #include "input_ext-intf.h"
66 #include "input_ext-dec.h"
69 #include "interface.h"
73 /* #include <netutils.h> */
76 /*****************************************************************************
78 *****************************************************************************/
79 static void RunThread ( input_thread_t *p_input );
80 static int InitThread ( input_thread_t *p_input );
81 static void ErrorThread ( input_thread_t *p_input );
82 static void DestroyThread ( input_thread_t *p_input );
83 static void EndThread ( input_thread_t *p_input );
85 /*****************************************************************************
86 * input_CreateThread: creates a new input thread
87 *****************************************************************************
88 * This function creates a new input, and returns a pointer
89 * to its description. On error, it returns NULL.
90 * If pi_status is NULL, then the function will block until the thread is ready.
91 * If not, it will be updated using one of the THREAD_* constants.
92 *****************************************************************************/
93 input_thread_t *input_CreateThread ( playlist_item_t *p_item, int *pi_status )
95 input_thread_t * p_input; /* thread descriptor */
96 int i_status; /* thread status */
98 /* Allocate descriptor */
99 p_input = (input_thread_t *)malloc( sizeof(input_thread_t) );
100 if( p_input == NULL )
102 intf_ErrMsg( "input error: can't allocate input thread (%s)",
107 /* Packets read once */
108 p_input->i_read_once = INPUT_READ_ONCE;
110 /* Initialize thread properties */
112 p_input->b_error = 0;
116 p_input->p_source = p_item->psz_name;
118 /* I have never understood that stuff --Meuuh */
119 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
120 *p_input->pi_status = THREAD_CREATE;
122 /* Initialize stream description */
123 p_input->stream.i_es_number = 0;
124 p_input->stream.i_selected_es_number = 0;
125 p_input->stream.i_pgrm_number = 0;
126 p_input->stream.i_new_status = p_input->stream.i_new_rate = 0;
127 p_input->stream.i_mux_rate = 0;
129 /* no stream, no area */
130 p_input->stream.i_area_nb = 0;
131 p_input->stream.pp_areas = NULL;
132 p_input->stream.p_selected_area = NULL;
133 /* By default there is one areas in a stream */
134 input_AddArea( p_input );
135 p_input->stream.p_selected_area = p_input->stream.pp_areas[0];
137 /* Initialize stream control properties. */
138 p_input->stream.control.i_status = PLAYING_S;
139 p_input->stream.control.i_rate = DEFAULT_RATE;
140 p_input->stream.control.b_mute = 0;
141 p_input->stream.control.b_bw = 0;
143 /* Initialize default settings for spawned decoders */
144 p_input->p_default_aout = p_main->p_aout;
145 p_input->p_default_vout = p_main->p_vout;
147 /* Create thread and set locks. */
148 vlc_mutex_init( &p_input->stream.stream_lock );
149 vlc_cond_init( &p_input->stream.stream_wait );
150 vlc_mutex_init( &p_input->stream.control.control_lock );
151 if( vlc_thread_create( &p_input->thread_id, "input", (void *) RunThread,
154 intf_ErrMsg( "input error: can't create input thread (%s)",
160 /* If status is NULL, wait until the thread is created */
161 if( pi_status == NULL )
165 msleep( THREAD_SLEEP );
166 } while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
167 && (i_status != THREAD_FATAL) );
168 if( i_status != THREAD_READY )
176 /*****************************************************************************
177 * input_DestroyThread: mark an input thread as zombie
178 *****************************************************************************
179 * This function should not return until the thread is effectively cancelled.
180 *****************************************************************************/
181 void input_DestroyThread( input_thread_t *p_input, int *pi_status )
183 int i_status; /* thread status */
186 p_input->pi_status = (pi_status != NULL) ? pi_status : &i_status;
187 *p_input->pi_status = THREAD_DESTROY;
189 /* Request thread destruction */
192 /* Make the thread exit of an eventual vlc_cond_wait() */
193 vlc_mutex_lock( &p_input->stream.stream_lock );
194 vlc_cond_signal( &p_input->stream.stream_wait );
195 vlc_mutex_unlock( &p_input->stream.stream_lock );
197 /* If status is NULL, wait until thread has been destroyed */
198 if( pi_status == NULL )
202 msleep( THREAD_SLEEP );
203 } while ( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
204 && (i_status != THREAD_FATAL) );
208 /*****************************************************************************
209 * RunThread: main thread loop
210 *****************************************************************************
211 * Thread in charge of processing the network packets and demultiplexing.
212 *****************************************************************************/
213 static void RunThread( input_thread_t *p_input )
217 if( InitThread( p_input ) )
220 /* If we failed, wait before we are killed, and exit */
221 *p_input->pi_status = THREAD_ERROR;
222 p_input->b_error = 1;
223 ErrorThread( p_input );
224 DestroyThread( p_input );
228 /* initialization is completed */
229 vlc_mutex_lock( &p_input->stream.stream_lock );
230 p_input->stream.b_changed = 1;
231 vlc_mutex_unlock( &p_input->stream.stream_lock );
233 while( !p_input->b_die && !p_input->b_error && !p_input->b_eof )
235 data_packet_t * pp_packets[p_input->i_read_once];
241 vlc_mutex_lock( &p_input->stream.stream_lock );
243 if( p_input->stream.p_selected_area->i_seek != NO_SEEK )
245 if( p_input->stream.b_seekable && p_input->pf_seek != NULL )
247 p_input->pf_seek( p_input,
248 p_input->stream.p_selected_area->i_seek );
250 for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
252 pgrm_descriptor_t * p_pgrm
253 = p_input->stream.pp_programs[i];
254 /* Escape all decoders for the stream discontinuity they
256 input_EscapeDiscontinuity( p_input, p_pgrm );
258 /* Reinitialize synchro. */
259 p_pgrm->i_synchro_state = SYNCHRO_REINIT;
262 p_input->stream.p_selected_area->i_seek = NO_SEEK;
265 vlc_mutex_unlock( &p_input->stream.stream_lock );
267 i_error = p_input->pf_read( p_input, pp_packets );
269 /* Demultiplex read packets. */
270 for( i = 0; i < p_input->i_read_once && pp_packets[i] != NULL; i++ )
272 p_input->pf_demux( p_input, pp_packets[i] );
279 /* End of file - we do not set b_die because only the
280 * interface is allowed to do so. */
281 intf_WarnMsg( 1, "input: EOF reached" );
286 p_input->b_error = 1;
291 if( p_input->b_error || p_input->b_eof )
293 ErrorThread( p_input );
296 EndThread( p_input );
298 DestroyThread( p_input );
300 intf_DbgMsg("input: Thread end");
303 /*****************************************************************************
304 * InitThread: init the input Thread
305 *****************************************************************************/
306 static int InitThread( input_thread_t * p_input )
310 /* Initialize statistics */
311 p_input->c_loops = 0;
312 p_input->c_bytes = 0;
313 p_input->c_payload_bytes = 0;
314 p_input->c_packets_read = 0;
315 p_input->c_packets_trashed = 0;
318 p_input->p_input_module = module_Need( p_main->p_bank,
319 MODULE_CAPABILITY_INPUT,
320 (probedata_t *)p_input );
322 if( p_input->p_input_module == NULL )
324 intf_ErrMsg( "input error: no suitable input module for `%s'",
329 #define f p_input->p_input_module->p_functions->input.functions.input
330 p_input->pf_init = f.pf_init;
331 p_input->pf_open = f.pf_open;
332 p_input->pf_close = f.pf_close;
333 p_input->pf_end = f.pf_end;
334 p_input->pf_read = f.pf_read;
335 p_input->pf_set_area = f.pf_set_area;
336 p_input->pf_demux = f.pf_demux;
337 p_input->pf_new_packet = f.pf_new_packet;
338 p_input->pf_new_pes = f.pf_new_pes;
339 p_input->pf_delete_packet = f.pf_delete_packet;
340 p_input->pf_delete_pes = f.pf_delete_pes;
341 p_input->pf_rewind = f.pf_rewind;
342 p_input->pf_seek = f.pf_seek;
344 p_input->pf_open( p_input );
346 if( p_input->b_error )
348 /* We barfed -- exit nicely */
349 p_input->pf_close( p_input );
350 module_Unneed( p_main->p_bank, p_input->p_input_module );
354 p_input->pf_init( p_input );
356 if( p_input->b_error )
358 /* We barfed -- exit nicely */
359 p_input->pf_close( p_input );
360 module_Unneed( p_main->p_bank, p_input->p_input_module );
364 *p_input->pi_status = THREAD_READY;
369 /*****************************************************************************
370 * ErrorThread: RunThread() error loop
371 *****************************************************************************
372 * This function is called when an error occured during thread main's loop.
373 *****************************************************************************/
374 static void ErrorThread( input_thread_t *p_input )
376 while( !p_input->b_die )
379 msleep( INPUT_IDLE_SLEEP );
383 /*****************************************************************************
384 * EndThread: end the input thread
385 *****************************************************************************/
386 static void EndThread( input_thread_t * p_input )
388 int * pi_status; /* thread status */
391 pi_status = p_input->pi_status;
392 *pi_status = THREAD_END;
396 struct tms cpu_usage;
399 intf_Msg("input stats: cpu usage (user: %d, system: %d)",
400 cpu_usage.tms_utime, cpu_usage.tms_stime);
404 /* Free all ES and destroy all decoder threads */
405 input_EndStream( p_input );
407 /* Free demultiplexer's data */
408 p_input->pf_end( p_input );
411 p_input->pf_close( p_input );
413 /* Release modules */
414 module_Unneed( p_main->p_bank, p_input->p_input_module );
418 /*****************************************************************************
419 * DestroyThread: destroy the input thread
420 *****************************************************************************/
421 static void DestroyThread( input_thread_t * p_input )
423 int * pi_status; /* thread status */
426 pi_status = p_input->pi_status;
428 /* Destroy Mutex locks */
429 vlc_mutex_destroy( &p_input->stream.control.control_lock );
430 vlc_mutex_destroy( &p_input->stream.stream_lock );
432 /* Free input structure */
436 *pi_status = THREAD_OVER;
439 /*****************************************************************************
440 * input_FileOpen : open a file descriptor
441 *****************************************************************************/
442 void input_FileOpen( input_thread_t * p_input )
444 struct stat stat_info;
447 char *psz_name = p_input->p_source;
449 /* FIXME: this code ought to be in the plugin so that code can
450 * be shared with the *_Probe function */
451 if( ( i_stat = stat( psz_name, &stat_info ) ) == (-1) )
453 int i_size = strlen( psz_name );
456 && !strncasecmp( psz_name, "dvd:", 4 ) )
458 /* get rid of the 'dvd:' stuff and try again */
460 i_stat = stat( psz_name, &stat_info );
462 else if( ( i_size > 5 )
463 && !strncasecmp( psz_name, "file:", 5 ) )
465 /* get rid of the 'file:' stuff and try again */
467 i_stat = stat( psz_name, &stat_info );
472 intf_ErrMsg( "input error: cannot stat() file `%s' (%s)",
473 psz_name, strerror(errno));
474 p_input->b_error = 1;
479 vlc_mutex_lock( &p_input->stream.stream_lock );
481 /* If we are here we can control the pace... */
482 p_input->stream.b_pace_control = 1;
484 if( S_ISREG(stat_info.st_mode) || S_ISCHR(stat_info.st_mode)
485 || S_ISBLK(stat_info.st_mode) )
487 p_input->stream.b_seekable = 1;
488 p_input->stream.p_selected_area->i_size = stat_info.st_size;
490 else if( S_ISFIFO(stat_info.st_mode)
492 || S_ISSOCK(stat_info.st_mode)
496 p_input->stream.b_seekable = 0;
497 p_input->stream.p_selected_area->i_size = 0;
501 vlc_mutex_unlock( &p_input->stream.stream_lock );
502 intf_ErrMsg( "input error: unknown file type for `%s'",
504 p_input->b_error = 1;
508 p_input->stream.p_selected_area->i_tell = 0;
509 vlc_mutex_unlock( &p_input->stream.stream_lock );
511 intf_Msg( "input: opening %s", p_input->p_source );
512 if( (p_input->i_handle = open( psz_name,
513 /*O_NONBLOCK | O_LARGEFILE*/0 )) == (-1) )
515 intf_ErrMsg( "input error: cannot open file (%s)", strerror(errno) );
516 p_input->b_error = 1;
522 /*****************************************************************************
523 * input_FileClose : close a file descriptor
524 *****************************************************************************/
525 void input_FileClose( input_thread_t * p_input )
527 intf_Msg( "input: closing %s", p_input->p_source );
528 close( p_input->i_handle );
534 #if !defined( SYS_BEOS ) && !defined( SYS_NTO )
535 /*****************************************************************************
536 * input_NetworkOpen : open a network socket
537 *****************************************************************************/
538 void input_NetworkOpen( input_thread_t * p_input )
541 int i_option_value, i_port;
542 struct sockaddr_in s_socket;
543 boolean_t b_broadcast;
545 /* FIXME : we don't handle channels for the moment */
547 /* Get the remote server */
548 if( p_input->p_source == NULL )
550 p_input->p_source = main_GetPszVariable( INPUT_SERVER_VAR,
551 INPUT_SERVER_DEFAULT );
554 /* Open a SOCK_DGRAM (UDP) socket, in the AF_INET domain, automatic (0)
556 p_input->i_handle = socket( AF_INET, SOCK_DGRAM, 0 );
557 if( p_input->i_handle == -1 )
559 intf_ErrMsg("NetworkOpen : can't create socket : %s", strerror(errno));
560 p_input->b_error = 1;
564 /* We may want to reuse an already used socket */
566 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_REUSEADDR,
567 &i_option_value,sizeof( i_option_value ) ) == -1 )
569 intf_ErrMsg("NetworkOpen : can't configure socket (SO_REUSEADDR: %s)",
571 close( p_input->i_handle );
572 p_input->b_error = 1;
576 /* Increase the receive buffer size to 1/2MB (8Mb/s during 1/2s) to avoid
577 * packet loss caused by scheduling problems */
578 i_option_value = 524288;
579 if( setsockopt( p_input->i_handle, SOL_SOCKET, SO_RCVBUF, &i_option_value,
580 sizeof( i_option_value ) ) == -1 )
582 intf_ErrMsg("NetworkOpen : can't configure socket (SO_RCVBUF: %s)",
584 close( p_input->i_handle );
585 p_input->b_error = 1;
589 /* Get details about what we are supposed to do */
590 b_broadcast = (boolean_t)main_GetIntVariable( INPUT_BROADCAST_VAR, 0 );
591 i_port = main_GetIntVariable( INPUT_PORT_VAR, INPUT_PORT_DEFAULT );
593 /* TODO : here deal with channel stufs */
595 /* Build the local socket */
596 if ( network_BuildLocalAddr( &s_socket, i_port, b_broadcast )
599 close( p_input->i_handle );
600 p_input->b_error = 1;
605 if( bind( p_input->i_handle, (struct sockaddr *)&s_socket,
606 sizeof( s_socket ) ) < 0 )
608 intf_ErrMsg("NetworkOpen: can't bind socket (%s)", strerror(errno));
609 close( p_input->i_handle );
610 p_input->b_error = 1;
614 /* Build socket for remote connection */
615 if ( network_BuildRemoteAddr( &s_socket, p_input->p_source )
618 close( p_input->i_handle );
619 p_input->b_error = 1;
623 /* And connect it ... should we really connect ? */
624 if( connect( p_input->i_handle, (struct sockaddr *) &s_socket,
625 sizeof( s_socket ) ) == (-1) )
627 intf_ErrMsg("NetworkOpen: can't connect socket" );
628 close( p_input->i_handle );
629 p_input->b_error = 1;
633 /* We can't pace control, but FIXME : bug in meuuh's code to sync PCR
634 * with the server. */
635 p_input->stream.b_pace_control = 1;
640 /*****************************************************************************
641 * input_NetworkClose : close a network socket
642 *****************************************************************************/
643 void input_NetworkClose( input_thread_t * p_input )
645 close( p_input->i_handle );
646 /* FIXME: deal with channels */